From: Anton Blanchard <anton@samba.org>
To: benh@kernel.crashing.org, paulus@samba.org
Cc: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH] powerpc: Fix endian issues in power7/8 machine check handler
Date: Mon, 16 Dec 2013 10:47:54 +1100 [thread overview]
Message-ID: <20131216104754.284ed286@kryten> (raw)
The SLB save area is shared with the hypervisor and is defined
as big endian, so we need to byte swap on little endian builds.
Signed-off-by: Anton Blanchard <anton@samba.org>
---
diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c
index b36e777..27c93f4 100644
--- a/arch/powerpc/kernel/mce_power.c
+++ b/arch/powerpc/kernel/mce_power.c
@@ -50,12 +50,12 @@ static void flush_and_reload_slb(void)
if (!slb)
return;
- n = min_t(u32, slb->persistent, SLB_MIN_SIZE);
+ n = min_t(u32, be32_to_cpu(slb->persistent), SLB_MIN_SIZE);
/* Load up the SLB entries from shadow SLB */
for (i = 0; i < n; i++) {
- unsigned long rb = slb->save_area[i].esid;
- unsigned long rs = slb->save_area[i].vsid;
+ unsigned long rb = be64_to_cpu(slb->save_area[i].esid);
+ unsigned long rs = be64_to_cpu(slb->save_area[i].vsid);
rb = (rb & ~0xFFFul) | i;
asm volatile("slbmte %0,%1" : : "r" (rs), "r" (rb));
reply other threads:[~2013-12-15 23:47 UTC|newest]
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